<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8" />
    <title>啊啊啊啊啊啊啊啊啊啊啊啊</title>
</head>
<body>
<h1>欢迎登录 ! ${user.username}</h1>
    <form action="${pageContext.request.contextPath }/loginUser">
     <input type="text" name="username"><br>
        <input type="password" name="password"><br>
        <input type="submit" value="提交">
    </form>
</body>
</html>